This article investigates the dielectric properties of novel polymeric materials for high-voltage direct current (HVDC) cable insulation, focusing on their potential for reprocessability and recyclability. Specifically, a reprocessable vitrimer, VIT2.6 characterized by the presence of thermally reversible cross-links, and its thermoplastic precursor, PE-HEMA, were comprehensively analyzed. Their performance was directly compared against cross-linked polyethylene (XLPE), the current benchmark material for HVDC applications. The study primarily focused on assessing space charge accumulation, utilizing the Pulsed Electroacoustic (PEA) method, and measuring electrical conductivity. This work aims to provide crucial insights into the dielectric behavior of these promising alternatives, particularly highlighting that the vitrimer exhibited less space charge accumulation and lower electrical conductivity, thus demonstrating significantly improved performance compared to PE-HEMA in meeting the stringent requirements for sustainable HVDC insulation.
Development and Implementation of Innovative Insulating Materials for High Voltage and Direct Current (HVDC) Power Transmission Cables: Analysis and Characterization of Electrical Properties of Vitrimers / Cottone, D.; Suraci, S. V.; Pinalli, R.; Dalcanale, E.; Fabiani, D.. - STAMPA. - (2025), pp. 736-739. ( IEEE Conference on Electrical Insulation and Dielectric Phenomena Manchester 14-17 settembre) [10.1109/CEIDP61707.2025.11218571].
Development and Implementation of Innovative Insulating Materials for High Voltage and Direct Current (HVDC) Power Transmission Cables: Analysis and Characterization of Electrical Properties of Vitrimers
Pinalli R.;Dalcanale E.;
2025-01-01
Abstract
This article investigates the dielectric properties of novel polymeric materials for high-voltage direct current (HVDC) cable insulation, focusing on their potential for reprocessability and recyclability. Specifically, a reprocessable vitrimer, VIT2.6 characterized by the presence of thermally reversible cross-links, and its thermoplastic precursor, PE-HEMA, were comprehensively analyzed. Their performance was directly compared against cross-linked polyethylene (XLPE), the current benchmark material for HVDC applications. The study primarily focused on assessing space charge accumulation, utilizing the Pulsed Electroacoustic (PEA) method, and measuring electrical conductivity. This work aims to provide crucial insights into the dielectric behavior of these promising alternatives, particularly highlighting that the vitrimer exhibited less space charge accumulation and lower electrical conductivity, thus demonstrating significantly improved performance compared to PE-HEMA in meeting the stringent requirements for sustainable HVDC insulation.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
